Here are some of the many CDs that I have bought. The comments are personal, feel free to disagree!
Her first album. It's quite a slow paced, the only fast songs being those previously released in Tenchi Muyo. I didn't like it much at first, but it grew on me.
Very cute voice, very cute songs! Buy it!
Her second album. Simalar to the first. Again, it's has slower songs. I didn't like it much when I got it, but this one is also growing on me the more I listen to it.
A mixed CD, with some English songs thrown in, but I think she should stick to Japanese... I guess you had to be there for the full effect.
This is the first solo CD of hers that I bought, apparently featuring many songs she has previously done in musicals. To me, it was all very average. I think her anime character songs are much better.
Has mostly songs in a vocal harmony style whatever that's called. But I prefer normal style songs...
Another radio drama CD, which seem to be appearing more often recently. Lots of talk, but also has songs, one of which is worth buying the whole CD for!
Radio drama CD. Lots of talk with a few ok songs.
A mini album. Has some songs which are nice, and a little drama.
A collection of various songs, many of which have been released already but now remixed on this CD. For most of these songs, I prefer the original versions.
The first solo album of hers that I have bought. Great songs. Very nice overall, with the added bonus that if your CD-rom supports a format called CD+ then you also get a little multimedia program which contains a quicktime movie of one of the tracks as well as a photo gallery.
See also my CD-rom section.
A concept album, whatever one of those is. Great songs all the way through.
Possibly the best anime collection CD I know. Great songs and music. Except #9.